Support audio output device enumeration and selection in PPAPI

content/renderer/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//content/common/features.gni")
 import("//media/media_options.gni")
@@ skipping 759 matching lines @@
       "pepper/host_var_tracker.cc",
       "pepper/host_var_tracker.h",
       "pepper/message_channel.cc",
       "pepper/message_channel.h",
       "pepper/pepper_audio_controller.cc",
       "pepper/pepper_audio_controller.h",
       "pepper/pepper_audio_encoder_host.cc",
       "pepper/pepper_audio_encoder_host.h",
       "pepper/pepper_audio_input_host.cc",
       "pepper/pepper_audio_input_host.h",
+      "pepper/pepper_audio_output_host.cc",
+      "pepper/pepper_audio_output_host.h",
       "pepper/pepper_broker.cc",
       "pepper/pepper_broker.h",
       "pepper/pepper_browser_connection.cc",
       "pepper/pepper_browser_connection.h",
       "pepper/pepper_camera_device_host.cc",
       "pepper/pepper_camera_device_host.h",
       "pepper/pepper_compositor_host.cc",
       "pepper/pepper_compositor_host.h",
       "pepper/pepper_device_enumeration_host_helper.cc",
       "pepper/pepper_device_enumeration_host_helper.h",
@@ skipping 156 matching lines @@
     # For the defines in mojo_media_config.
     public_configs = [ "//media/mojo/services:mojo_media_config" ]
   }
 
   if (!is_component_build) {
     public_deps = [
       ":renderer",
     ]
   }
 }